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04-08-2011, 10:28 AM   #23
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Re: 48÷2(9+3) = ??

Quote:
 Originally Posted by Numinous Except that's how YOU read the equation. For me, since both operations have the same weight, the lack of proper annotation makes both (2/3)*4 and 2/(3*4) have the same validity. There's a reason for brackets in math, and this is it: to indicate which is the pivotal operation..
yes that is how I read it, which is the correct way. you do it from left to right with equal operations, that is the correct way whether YOU do it or not

Quote:
 Originally Posted by Numinous But it lacks proper annotation! Nobody is saying the equation is nonsensical, I'm only saying that it'll lead to ambiguity, which already has: you say 2, kluang says 288. And both of you solved the equation with equally valid processes. Now tell me how that happens if it isn't faulty? ..
that happens when not everyone go's along with the consensus and sovles it a differnet way, doesnt mean its faulty.

Quote:
 Originally Posted by Numinous But, like ACt said, if you consider the ÷ as a separation of fraction, it's 48/(2*(9+3))=48/(2*12)=48/24=2 See? You just backed up both claims, which shouldn't happen in a proper equation.
well act is wrong because / doesnt meant seperation of a fraction, it means to divide. if the equation was written 48 / 2 x (9+3) he would still get 2 and it would be 288